Update codemirror
Set up various codemirror plugins and syntax highlighting
Improve layout

Still need to make codemirror to take space properly somehow.
Style commands better
Convert evaluate into play, stop control

It is possible to style this via CSS quite easily.
Make codemirror plugins depends on codemirror

It is important codemirror is loaded before those as otherwise it will give
certain nasty errors.
Define prop helper
Define parallel helper
Render code template selector options in the right order
Set up is.js
Add annotation module

This allows us to use type hints and such. This enables documentation
introspection and such.
Add various utilities

It's probably neatest to integrate funkit to the project later. This is good
enough for now, though.
Inject define ids to sandbox modules via load

Unfortunately define(id, ...) notation may not be used as that screws up
regular loading. It's better to inject module ids (needed for window) at iframe
loading phase.